Freshwater Aquarium Heaters & Thermometers

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Slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 2 of 5
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Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 2 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 3 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 4 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 5 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 2 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 3 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 4 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 5 of 5
Slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 2 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 3 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 4 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 5 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 2 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 3 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 4 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 5 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 1 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 2 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 3 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 4 of 5
Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt slide 5 of 5

Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt

Rated 4 out of 5 stars
41
$27.97 Chewy Price
$34.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 2 of 8
Fluval M 200Watt Submersible Fish Heater slide 3 of 8
Fluval M 200Watt Submersible Fish Heater slide 4 of 8
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Fluval M 200Watt Submersible Fish Heater slide 1 of 8
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Fluval M 200Watt Submersible Fish Heater slide 8 of 8
Fluval M 200Watt Submersible Fish Heater slide 1 of 8
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Fluval M 200Watt Submersible Fish Heater slide 8 of 8
Slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 2 of 8
Fluval M 200Watt Submersible Fish Heater slide 3 of 8
Fluval M 200Watt Submersible Fish Heater slide 4 of 8
Fluval M 200Watt Submersible Fish Heater slide 5 of 8
Fluval M 200Watt Submersible Fish Heater slide 6 of 8
Fluval M 200Watt Submersible Fish Heater slide 7 of 8
Fluval M 200Watt Submersible Fish Heater slide 8 of 8
Fluval M 200Watt Submersible Fish Heater slide 1 of 8
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Fluval M 200Watt Submersible Fish Heater slide 4 of 8
Fluval M 200Watt Submersible Fish Heater slide 5 of 8
Fluval M 200Watt Submersible Fish Heater slide 6 of 8
Fluval M 200Watt Submersible Fish Heater slide 7 of 8
Fluval M 200Watt Submersible Fish Heater slide 8 of 8
Fluval M 200Watt Submersible Fish Heater slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 2 of 8
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Fluval M 200Watt Submersible Fish Heater slide 4 of 8
Fluval M 200Watt Submersible Fish Heater slide 5 of 8
Fluval M 200Watt Submersible Fish Heater slide 6 of 8
Fluval M 200Watt Submersible Fish Heater slide 7 of 8
Fluval M 200Watt Submersible Fish Heater slide 8 of 8

Fluval M 200Watt Submersible Fish Heater

Rated 4.3 out of 5 stars
24
$36.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Slide 1 of 2
Fluval M 150Watt Submersible Fish Heater slide 1 of 2
Fluval M 150Watt Submersible Fish Heater slide 2 of 2
Fluval M 150Watt Submersible Fish Heater slide 1 of 2
Fluval M 150Watt Submersible Fish Heater slide 2 of 2
Fluval M 150Watt Submersible Fish Heater slide 1 of 2
Fluval M 150Watt Submersible Fish Heater slide 2 of 2

Fluval M 150Watt Submersible Fish Heater

Rated 4.3 out of 5 stars
8
$34.99 Chewy Price
$35.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Slide 1 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 1 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 2 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 3 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 4 of 8
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OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 6 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 7 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 8 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 1 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 2 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 3 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 4 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 5 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 6 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 7 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 8 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 1 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 2 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 3 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 4 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 5 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 6 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 7 of 8
OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater slide 8 of 8

OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater

Rated 4.7 out of 5 stars
3
$48.82 Chewy Price
$48.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Fluval P25 Pre-Set Aquarium Fish Heater

Rated 4.2 out of 5 stars
9
$22.99 Chewy Price
$29.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Seapora Quartz Aquarium Heater, 300-watt

Rated 4 out of 5 stars
5
$25.38 Chewy Price
$26.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Marina Betta Submersible Aquarium Heater

Rated 3.9 out of 5 stars
70
$12.98 Chewy Price
$17.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval P10 Pre-Set Aquarium Fish Heater

Rated 4.2 out of 5 stars
21
$22.79 Chewy Price
$26.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Hydor Betta & Betta Bowl Slim Heater, 7.5-watt

Rated 3.8 out of 5 stars
41
$15.12 Chewy Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Apr 11 and Apr 15

Penn-Plax Aquarium LED Display Heater, 300W

Rated 2.4 out of 5 stars
5
$32.99 Chewy Price
$64.99 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Apr 11 and Apr 14

OASE Indoor Aquatics Biomaster Thermo 350 External Fish Heater

Rated 4.7 out of 5 stars
20
$319.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

New

JBJ Aquarium Nano Arctica E-Chiller, White/Black, 20-gal

$438.00 Chewy Price
($21.90/gl) Price per Unit
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Apr 12 and Apr 16

Zoo Med BettaTherm Mini Size Betta Bowl Heater

Rated 2.3 out of 5 stars
11
$15.70 Chewy Price
$21.43 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Marina 10.5-in Submersible Fish Heater, 150-Watts

Rated 4.2 out of 5 stars
6
$27.99 Chewy Price
$39.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval Sea Aquarium Hydrometer, Medium

Rated 2.5 out of 5 stars
6
$14.14 Chewy Price
$14.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Hydor Theo Shatterproof Aquarium Heater, 25-watt

Rated 3.4 out of 5 stars
43
$26.88 Chewy Price
$35.95 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Apr 11 and Apr 15

Penn-Plax 10W Plastic Safe Aqiuarium Heater, 4-in

Rated 3.2 out of 5 stars
6
$25.99 Chewy Price
$27.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 400 Adjustable Fish Heater

Rated 4.5 out of 5 stars
2
$57.99 Chewy Price
$62.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Seapora Mini Desktop Aquarium Heater, 30-watt

Rated 2 out of 5 stars
1
$13.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics Biomaster Thermo 600 External Fish Heater

Rated 5 out of 5 stars
3
$400.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Lifegard Led Digital Thermometer, Blue

Rated 4.4 out of 5 stars
5
$34.49 Chewy Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Apr 13 and Apr 17

Zoo Med Aqua Cool Aquarium Cooling Fan

Rated 2.3 out of 5 stars
7
$23.59 Chewy Price
$45.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Hydor Betta Bowl Slim Fish Tank Heater

Rated 3.3 out of 5 stars
12
$13.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 100 Adjustable Fish Heater

Rated 4 out of 5 stars
4
$37.51 Chewy Price
$42.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, White

Rated 1 out of 5 stars
1
$39.99 Chewy Price
$70.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Filtosmart Thermo 200 External Fish Heater

Rated 5 out of 5 stars
1
$193.99 Chewy Price
$219.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics HeatUp 300 Adjustable Fish Heater

Rated 5 out of 5 stars
2
$41.59 Chewy Price
$56.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics HeatUp 150 Adjustable Fish Heater

Rated 5 out of 5 stars
1
$40.87 Chewy Price
$44.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Lifegard Digital Thermometer & Hygrometer, Black

Rated 3.2 out of 5 stars
5
$51.00 Chewy Price
$57.73 List Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Apr 13 and Apr 17

JBJ Aquarium Arctica Titanium Auqarium Chiller, 1/3-hp

Rated 5 out of 5 stars
3
$980.84 Chewy Price
$1059.38 List Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Apr 12 and Apr 16

OASE Indoor Aquatics Bioplus Thermo 50 Internal Fish Heater

Rated 3 out of 5 stars
2
$65.59 Chewy Price
$94.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, Dark Blue

Rated 5 out of 5 stars
1
$79.52 Chewy Price
$80.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Bioplus Thermo 100 Internal Fish Heater

$84.99 Chewy Price
$99.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Filtosmart Thermo 100 External Fish Heater

Rated 3 out of 5 stars
3
$134.99 Chewy Price
$169.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, Dark Blue

Rated 1 out of 5 stars
1
$88.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, White

$98.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Category

Thermometers

Tank Heaters

Product Type

Aquarium Type

Brand

7 Brands are shown below

Fish Type

Price

Customer Rating